A 1970s US trade deal that unilaterally grants products worth billions of dollars from India and other developing countries tariff-free access to the American market is set to expire on December 31, as pressure mounts from Donald Trump supporters to let it die altogether.
Congress last week failed to agree on renewing the Generalized System of Preferences, despite Republicans and Democrats saying they support it and will try to bring it back to life.
But critics of the programme created to help developing nations grow their export industries argue that countries such as India have for too long abused the programme by ignoring its rules, and that past administrations have been too lax in enforcing them.